diff options
| -rw-r--r-- | include/net/sctp/sctp.h | 13 | ||||
| -rw-r--r-- | net/sctp/output.c | 4 | ||||
| -rw-r--r-- | net/sctp/transport.c | 17 |
3 files changed, 14 insertions, 20 deletions
diff --git a/include/net/sctp/sctp.h b/include/net/sctp/sctp.h index 6ee44b24864a..a2ef81466b00 100644 --- a/include/net/sctp/sctp.h +++ b/include/net/sctp/sctp.h @@ -704,4 +704,17 @@ static inline void sctp_v4_map_v6(union sctp_addr *addr) addr->v6.sin6_addr.s6_addr32[2] = htonl(0x0000ffff); } +/* The cookie is always 0 since this is how it's used in the + * pmtu code. + */ +static inline struct dst_entry *sctp_transport_dst_check(struct sctp_transport *t) +{ + if (t->dst && !dst_check(t->dst, 0)) { + dst_release(t->dst); + t->dst = NULL; + } + + return t->dst; +} + #endif /* __net_sctp_h__ */ diff --git a/net/sctp/output.c b/net/sctp/output.c index 817174eb5f41..8fc4dcd294ab 100644 --- a/net/sctp/output.c +++ b/net/sctp/output.c @@ -377,9 +377,7 @@ int sctp_packet_transmit(struct sctp_packet *packet) */ skb_set_owner_w(nskb, sk); - /* The 'obsolete' field of dst is set to 2 when a dst is freed. */ - if (!dst || (dst->obsolete > 1)) { - dst_release(dst); + if (!sctp_transport_dst_check(tp)) { sctp_transport_route(tp, NULL, sctp_sk(sk)); if (asoc && (asoc->param_flags & SPP_PMTUD_ENABLE)) { sctp_assoc_sync_pmtu(asoc); diff --git a/net/sctp/transport.c b/net/sctp/transport.c index 3889330b7b04..b026ba0c6992 100644 --- a/net/sctp/transport.c +++ b/net/sctp/transport.c @@ -226,23 +226,6 @@ void sctp_transport_pmtu(struct sctp_transport *transport, struct sock *sk) transport->pathmtu = SCTP_DEFAULT_MAXSEGMENT; } -/* this is a complete rip-off from __sk_dst_check - * the cookie is always 0 since this is how it's used in the - * pmtu code - */ -static struct dst_entry *sctp_transport_dst_check(struct sctp_transport *t) -{ - struct dst_entry *dst = t->dst; - - if (dst && dst->obsolete && dst->ops->check(dst, 0) == NULL) { - dst_release(t->dst); - t->dst = NULL; - return NULL; - } - - return dst; -} - void sctp_transport_update_pmtu(struct sctp_transport *t, u32 pmtu) { struct dst_entry *dst; |